<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Title</title>
    <script>
       window.alert("Hello,JavaScript!");
    </script>
    <style>
      * {
        margin: 0;
        padding: 0;
      }
      body {
        background-color: #1d7fa7;
      }
      img {
        display: block;
      }
      #container{
        display: flex;
        margin-left: 20%;
        flex-direction: column;
        justify-content:center;
      }
      #main{
        display: flex;
        align-items: flex-start ;
      }
      #content{
        display: flex;
        flex-direction: row;
        flex-wrap:wrap;
      }
      #estate{
        flex-direction: column;
      }
    </style>
  </head>
  <body>
    <div id="container">
      <div id="logo"><img src="layout/logo.png" /></div>
      <div id="nav"><img src="layout/nav.png" /></div>
      <div id="main">
        <div id="sidebar"><img src="layout/sidebar.png" /></div>
        <div id="content">
          <div id="news"><img src="layout/news.png" /></div>
          <div id="about"><img src="layout/about.png" /></div>
          <div id="estate"><img src="layout/estate.png" /></div>
        </div>
      </div>
      <div id="footer"><img src="layout/footer.png" /></div>
    </div>
  </body>
</html>
